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1 Leaflets 4; corolla yellow; [tribe Dalbergieae]
..2 Leaflets and fruits not glandular-punctate; stamens monadelphous; [tribe Genisteae]
....3 Leaflets linear to very narrowly oblanceolate, 0.5-2.0 (-3.5) mm wide, > 10× as long as wide; [Coastal Plain]
....3 Leaflets broader, > 5 mm wide, 2-4.5× as long as wide; [collectively more widespread]